diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a1b877c..b87bff32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 ## New features
 * Background detection can now be used in scans, if you have the background-detect extension. ([!153](https://gitlab.com/openflexure/openflexure-microscope-server/-/merge_requests/153))
 * Support for Sangaboard firmware v1, via updated `sangaboard` dependency ([!154](https://gitlab.com/openflexure/openflexure-microscope-server/-/merge_requests/154))
+* Fixed links in the OpenAPI documentation describing actions etc. ([!155](https://gitlab.com/openflexure/openflexure-microscope-server/-/merge_requests/154))
 
 # [v2.10.1](https://gitlab.com/openflexure/openflexure-microscope-server/compare/v2.10.0...v2.10.1) (2022-01-17)
 ## Bug fixes
diff --git a/openflexure_microscope/api/openapi.py b/openflexure_microscope/api/openapi.py
index f0605954..77677740 100644
--- a/openflexure_microscope/api/openapi.py
+++ b/openflexure_microscope/api/openapi.py
@@ -8,8 +8,8 @@ API_TAGS = [
             "embedded in the JSON action description."
         ),
         "externalDocs": {
-            "url": "https://iot.mozilla.org/wot/#action-resource",
-            "description": "Mozilla's description of Web of Things 'Action' resources.",
+            "url": "https://www.w3.org/TR/wot-thing-description/#actionaffordance",
+            "description": "w3's description of Web of Things 'Action' resources.",
         },
     },
     {
@@ -19,8 +19,8 @@ API_TAGS = [
             "state of the microscope."
         ),
         "externalDocs": {
-            "url": "https://iot.mozilla.org/wot/#property-resource",
-            "description": "Mozilla's description of Web of Things 'Property' resources.",
+            "url": "https://www.w3.org/TR/wot-thing-description/#propertyaffordance",
+            "description": "w3's description of Web of Things 'Property' resources.",
         },
     },
     {"name": "captures", "description": ""},
diff --git a/openflexure_microscope/api/v2/views/actions/stage.py b/openflexure_microscope/api/v2/views/actions/stage.py
index d13774ab..20412a6f 100644
--- a/openflexure_microscope/api/v2/views/actions/stage.py
+++ b/openflexure_microscope/api/v2/views/actions/stage.py
@@ -10,9 +10,9 @@ class MoveStageAPI(ActionView):
             load_default=False,
             metadata={"description": "Move to an absolute position", "example": False},
         ),
-        "x": fields.Int(load_default=None, metadata={"example": 100}, allow_none=False),
-        "y": fields.Int(load_default=None, metadata={"example": 100}, allow_none=False),
-        "z": fields.Int(load_default=None, metadata={"example": 20}, allow_none=False),
+        "x": fields.Int(load_default=None, metadata={"example": 100}, allow_none=True),
+        "y": fields.Int(load_default=None, metadata={"example": 100}, allow_none=True),
+        "z": fields.Int(load_default=None, metadata={"example": 20}, allow_none=True),
     }
 
     def post(self, args):
diff --git a/openflexure_microscope/api/v2/views/stage.py b/openflexure_microscope/api/v2/views/stage.py
index bcfec3a9..c6437a24 100644
--- a/openflexure_microscope/api/v2/views/stage.py
+++ b/openflexure_microscope/api/v2/views/stage.py
@@ -7,7 +7,7 @@ class StageTypeProperty(PropertyView):
     """The type of the stage"""
 
     schema = fields.String(
-        load_default=None,
+        load_default="SangaStage",
         validate=validate.OneOf(["SangaStage", "SangaDeltaStage"]),
         metadata={
             "description": "The translation stage geometry",
diff --git a/openflexure_microscope/camera/pi.py b/openflexure_microscope/camera/pi.py
index 6052363b..e46360fa 100644
--- a/openflexure_microscope/camera/pi.py
+++ b/openflexure_microscope/camera/pi.py
@@ -30,7 +30,7 @@ import logging
 import time
 
 # Type hinting
-from typing import BinaryIO, Tuple, Union, Optional
+from typing import BinaryIO, Optional, Tuple, Union
 
 import numpy as np
 
@@ -307,7 +307,9 @@ class PiCameraStreamer(BaseCamera):
             self.picamera.zoom = new_fov
 
     def start_preview(
-        self, fullscreen: bool = True, window: Optional[Tuple[int, int, int, int]] = None
+        self,
+        fullscreen: bool = True,
+        window: Optional[Tuple[int, int, int, int]] = None,
     ):
         """Start the on board GPU camera preview."""
         with self.lock(timeout=1):
diff --git a/openflexure_microscope/config.py b/openflexure_microscope/config.py
index 8ceed138..b2db8546 100644
--- a/openflexure_microscope/config.py
+++ b/openflexure_microscope/config.py
@@ -5,7 +5,6 @@ import os
 import shutil
 from typing import Optional
 
-
 from .json import JSONEncoder
 from .paths import CONFIGURATION_FILE_PATH, SETTINGS_FILE_PATH